Matthew McConaughey says Chewbacca is his favorite sci-fi character

The 44-year-old actor stars in Christopher Nolan's new sci-fi film 'Interstellar' - which also features the likes of Sir Michael Caine, Jessica Chastain and Anne Hathaway - and speaking in London yesterday (29.10.14), McConaughey named the character from the 'Star Wars' franchise as his top pick.

The rest of the star-studded cast also named their favourite sci-fi characters, with the 'Star Wars' franchise playing a prominent role.

Chastain named Princess Leia among her top picks, while Hathaway cited R2-D2 as her favourite.

Similarly, Mackenzie Foy, 13, said she couldn't choose between 'Star Wars' character Darth Vader and Spock of 'Star Trek'.

By contrast, Caine, 81, cited Sandra Bullock's character in 'Gravity', Dr. Ryan Stone, as top of his list.

'Interstellar' is the sixth movie Caine has made with Nolan and speaking during 'A Night Out With... Sir Michael Caine' at the Royal Albert Hall in London earlier this month, he described the filmmaker as his ''lucky charm''.

He said: ''Me and Christopher have now done six movies. He always says I'm his lucky charm and I'm always saying he's my lucky charm. It's been an incredible ride.''